3) 



a further decrease in the production of oysters per existing oyster 

 raft. 



This first model was necessarily somewhat simplistic but raises some 

 interesting questions and makes some defensible predictions about mussel 

 production and raft number. In view of the great economic importance of this 

 estuary, the Ria de Arosa, and the virtual impossibility of decreasing the 

 number of rafts, once it is permitted to rise from the present value, we see 

 little justification for any decision to change the status quo, at least until 

 all the predictive modeling has been completed. 



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171 



